Kimi K2.7 Codevso1-preview
Kimi K2.7 Code | o1-preview | |
|---|---|---|
| Specifications | ||
Parameters | 1T | — |
Context window | 256k | 128k |
| Benchmarks | ||
Agentic coding CursorBench v3.2Cursor's own test of harder, real-world coding tasks inside a code editor, on the refreshed v3.2 task set. Scores aren't comparable with v3.1. Higher is better. | 49.7% | — |
Agentic coding DeepSWE 1.1Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. (Version 1.1 of the test.) Higher is better. | 31% | — |
Next.js coding Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | 75% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 73.3% |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | 1469 | — |
| Overview | ||
| Company | Moonshot AI | OpenAI |
| Release date | Jun 12 2026 | Sep 12 2024 |
| Access | Open Weight | Proprietary |
Which is better: Kimi K2.7 Code or o1-preview?
Kimi K2.7 Code and o1-preview don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1-preview shipped 638 days before Kimi K2.7 Code, so benchmark comparisons should account for the intervening progress.
Context windows are 256k (Kimi K2.7 Code) vs 128k (o1-preview). Kimi K2.7 Code is open weight, while o1-preview is proprietary.
Direct benchmark comparisons are unavailable — Kimi K2.7 Code and o1-preview don't publish scores on any of the same benchmarks.
Frequently asked questions
Kimi K2.7 Code was released by Moonshot AI on Jun 12 2026.
o1-preview was released by OpenAI on Sep 12 2024.
Kimi K2.7 Code has a 256k context window; o1-preview has 128k.
Kimi K2.7 Code is an open weight model released by Moonshot AI. o1-preview is a proprietary model released by OpenAI.